Datasheet

2-1
Quick Start
 
In order to setup the EVM quickly and to take some measurements at default
settings, the following actions are required:
- Supply 3.3 V to P1, LED D4 will be on.
- Apply a single-ended reference clock to the reference clock input
(REF_IN). For default setting, the reference clock must be 1/8
th
of VCXO
frequency (if VCXO frequency is 245.76 MHz, then the reference clock
must be 30.72 MHz for locking).
- Connect Y0/Y0B (or Y1/Y1B) to oscilloscope in order to check output sig-
nal. Ensure the oscilloscope has 50 Ω to ground termination.
After power up, D1 is on if there is a valid reference clock and D2 is on if there
is a valid VCXO clock for the CDC7005. If the reference clock and VCXO
clocks are phase locked, D3 is on.
Chapter 2